/* ==========================================================================
   2026 日本大阪・滋賀・兵庫 4D3N 互動 Web Portal - 旗艦級設計系統
   Design Philosophy: Bento Grid ✕ Mobile-First Dock ✕ Glassmorphism ✕ Rich Aesthetics
   ========================================================================== */

/* ---------- 1. Design Tokens & Variables ---------- */
:root {
  /* Brand Palette */
  --primary: #0e2a47;          /* 和風琉璃紺 (Japanese Indigo Navy) */
  --primary-light: #1d456f;
  --primary-gradient: linear-gradient(135deg, #0e2a47 0%, #1a4975 100%);
  --accent: #d97706;           /* 夕陽金琥珀 (Sunset Amber) */
  --accent-light: #fef3c7;
  --accent-hover: #b45309;
  --cool-lake: #0284c7;        /* 琵琶湖青 (Biwako Cyan Blue) */
  --cool-lake-light: #e0f2fe;
  --bamboo: #15803d;           /* 箕面竹林翠綠 (Bamboo Valley Green) */
  --bamboo-light: #dcfce7;
  --daruma-red: #dc2626;       /* 勝尾寺達摩朱紅 (Daruma Crimson) */
  --daruma-light: #fee2e2;
  --purple-kyoto: #7c3aed;
  --purple-light: #ede9fe;

  /* Surfaces & Backgrounds */
  --bg-page: #f8fafc;
  --bg-card: #ffffff;
  --bg-card-glass: rgba(255, 255, 255, 0.92);
  --bg-dark: #0f172a;
  --border-color: #e2e8f0;
  --border-glass: rgba(226, 232, 240, 0.8);

  /* Typography Colors */
  --text-main: #0f172a;
  --text-muted: #64748b;
  --text-sub: #475569;
  --text-white: #ffffff;

  /* Typography Families */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans TC', Roboto, sans-serif;
  --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans TC', sans-serif;

  /* Elevation Shadows */
  --shadow-xs: 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.08), 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.08), 0 2px 4px -2px rgba(15, 23, 42, 0.04);
  --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.08), 0 4px 6px -4px rgba(15, 23, 42, 0.04);
  --shadow-xl: 0 20px 25px -5px rgba(15, 23, 42, 0.1), 0 8px 10px -6px rgba(15, 23, 42, 0.04);
  --shadow-glow: 0 0 20px rgba(217, 119, 6, 0.25);

  /* Layout & Geometry */
  --max-width: 1240px;
  --header-height: 68px;
  --dock-height: 64px;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-full: 9999px;
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---------- 2. Base & Reset ---------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-family);
  background-color: var(--bg-page);
  color: var(--text-main);
  line-height: 1.65;
  min-height: 100vh;
  padding-bottom: calc(var(--dock-height) + 2rem);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition-fast);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

/* ---------- 3. Layout Container ---------- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* ---------- 4. Top Navigation Bar (Glassmorphic) ---------- */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(14, 42, 71, 0.94);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  height: var(--header-height);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
}

.site-nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-white);
  letter-spacing: -0.02em;
}

.nav-brand .brand-badge {
  background: linear-gradient(135deg, #d97706, #f59e0b);
  color: #fff;
  font-size: 0.75rem;
  padding: 0.15rem 0.5rem;
  border-radius: var(--radius-full);
  font-weight: 600;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  list-style: none;
}

.nav-links a {
  color: rgba(255, 255, 255, 0.85);
  font-size: 0.92rem;
  font-weight: 500;
  padding: 0.45rem 0.9rem;
  border-radius: var(--radius-full);
  transition: var(--transition-fast);
}

.nav-links a:hover {
  color: #ffffff;
  background: rgba(255, 255, 255, 0.12);
}

.nav-links a.active {
  color: #ffffff;
  background: var(--accent);
  box-shadow: 0 2px 8px rgba(217, 119, 6, 0.4);
}

/* ---------- 5. Bento Grid Layout System ---------- */
.bento-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 1.25rem;
  margin: 1.5rem 0 2.5rem;
}

.bento-card {
  background: var(--bg-card-glass);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.bento-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(217, 119, 6, 0.3);
}

/* Bento Column Spans */
.col-12 { grid-column: span 12; }
.col-8  { grid-column: span 8; }
.col-7  { grid-column: span 7; }
.col-6  { grid-column: span 6; }
.col-5  { grid-column: span 5; }
.col-4  { grid-column: span 4; }
.col-3  { grid-column: span 3; }

/* Bento Themes */
.bento-hero {
  background: linear-gradient(135deg, #0e2a47 0%, #173d66 60%, #1e5287 100%);
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.15);
  box-shadow: var(--shadow-xl);
}

.bento-accent {
  background: linear-gradient(135deg, #fffbeb 0%, #fef3c7 100%);
  border-color: #fde68a;
}

.bento-cool {
  background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
  border-color: #bae6fd;
}

.bento-forest {
  background: linear-gradient(135deg, #f0fdf4 0%, #dcfce7 100%);
  border-color: #bbf7d0;
}

/* ---------- 6. Day Switcher Bar ---------- */
.day-nav-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  margin: 1.5rem 0 2rem;
  flex-wrap: wrap;
}

.day-nav-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1.25rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-sub);
  box-shadow: var(--shadow-xs);
  transition: var(--transition-fast);
}

.day-nav-btn:hover {
  color: var(--primary);
  border-color: var(--primary-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.day-nav-btn.active {
  background: var(--primary-gradient);
  color: #ffffff;
  border-color: transparent;
  box-shadow: 0 4px 14px rgba(14, 42, 71, 0.3);
}

.day-nav-btn .day-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  background: rgba(0, 0, 0, 0.08);
  border-radius: 50%;
  font-size: 0.78rem;
}

.day-nav-btn.active .day-num {
  background: var(--accent);
  color: #ffffff;
}

/* ---------- 7. Vertical Timeline System ---------- */
.timeline-section {
  position: relative;
  margin: 2rem 0;
  padding-left: 2rem;
}

.timeline-section::before {
  content: '';
  position: absolute;
  left: 11px;
  top: 10px;
  bottom: 10px;
  width: 3px;
  background: linear-gradient(to bottom, var(--primary) 0%, var(--accent) 50%, var(--cool-lake) 100%);
  border-radius: var(--radius-full);
  opacity: 0.35;
}

.timeline-node {
  position: relative;
  margin-bottom: 2.25rem;
}

.timeline-node::before {
  content: '';
  position: absolute;
  left: -2rem;
  top: 1.25rem;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background: #ffffff;
  border: 4px solid var(--accent);
  box-shadow: 0 0 0 4px rgba(217, 119, 6, 0.2);
  z-index: 2;
  transition: transform var(--transition-fast);
}

.timeline-node:hover::before {
  transform: scale(1.3);
  border-color: var(--primary);
  box-shadow: 0 0 0 6px rgba(14, 42, 71, 0.2);
}

.timeline-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.timeline-card:hover {
  transform: translateX(4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(217, 119, 6, 0.4);
}

.timeline-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
  padding-bottom: 0.65rem;
  border-bottom: 1px dashed var(--border-color);
}

.timeline-time {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.timeline-badges {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.78rem;
  font-weight: 600;
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-full);
}

.badge-train   { background: #e0f2fe; color: #0369a1; }
.badge-subway  { background: #fef3c7; color: #92400e; }
.badge-ropeway { background: #ede9fe; color: #6d28d9; }
.badge-walk    { background: #dcfce7; color: #15803d; }
.badge-food    { background: #fee2e2; color: #b91c1c; }
.badge-sunset  { background: #ffedd5; color: #c2410c; }
.badge-hotel   { background: #f1f5f9; color: #475569; }

/* Action Links inside Timeline */
.action-toolbar {
  display: flex;
  gap: 0.6rem;
  margin-top: 1rem;
  flex-wrap: wrap;
}

.btn-action {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0.4rem 0.85rem;
  border-radius: var(--radius-sm);
  background: #f1f5f9;
  color: var(--text-main);
  border: 1px solid var(--border-color);
  transition: var(--transition-fast);
}

.btn-action:hover {
  background: #e2e8f0;
  color: var(--primary);
}

.btn-action.btn-maps {
  background: linear-gradient(135deg, #0284c7, #0369a1);
  color: #ffffff;
  border-color: transparent;
}

.btn-action.btn-maps:hover {
  background: #0284c7;
  box-shadow: 0 2px 8px rgba(2, 132, 199, 0.4);
}

.btn-action.btn-copy {
  background: #ffffff;
  border-color: #cbd5e1;
}

.btn-action.btn-copy:hover {
  background: #f8fafc;
  border-color: var(--accent);
  color: var(--accent);
}

.btn-action.btn-photos {
  background: #fdf2f8;
  color: #db2777;
  border-color: #fbcfe8;
}

.btn-action.btn-photos:hover {
  background: #fce7f3;
  color: #be185d;
  border-color: #f472b6;
  box-shadow: 0 2px 8px rgba(219, 39, 119, 0.2);
}

/* ---------- 8. Mobile Bottom Quick Dock (Mobile-First) ---------- */
.bottom-dock {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: var(--dock-height);
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-top: 1px solid var(--border-color);
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.08);
  z-index: 200;
  justify-content: space-around;
  align-items: center;
  padding: 0 0.5rem;
}

.dock-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.15rem;
  color: var(--text-muted);
  font-size: 0.72rem;
  font-weight: 600;
  flex: 1;
  padding: 0.4rem 0;
  border-radius: var(--radius-sm);
  transition: var(--transition-fast);
}

.dock-item .dock-icon {
  font-size: 1.25rem;
}

.dock-item.active,
.dock-item:hover {
  color: var(--primary);
}

.dock-item.active .dock-icon {
  transform: scale(1.15);
  color: var(--accent);
}

/* ---------- 9. Instant Filter Pills (Evening Hub) ---------- */
.filter-container {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  overflow-x: auto;
  padding: 0.5rem 0 1rem;
  margin-bottom: 1.5rem;
  scrollbar-width: none;
}

.filter-container::-webkit-scrollbar {
  display: none;
}

.filter-pill {
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 1.1rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-sub);
  cursor: pointer;
  transition: var(--transition-fast);
}

.filter-pill:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.filter-pill.active {
  background: var(--primary-gradient);
  color: #ffffff;
  border-color: transparent;
  box-shadow: 0 2px 10px rgba(14, 42, 71, 0.25);
}

/* ---------- 10. Toast Notification & Pronunciation Card ---------- */
.toast-box {
  position: fixed;
  bottom: calc(var(--dock-height) + 1.5rem);
  left: 50%;
  transform: translateX(-50%) translateY(120px);
  background: #0f172a;
  color: #ffffff;
  padding: 1rem 1.25rem;
  border-radius: var(--radius-md);
  font-size: 0.88rem;
  font-weight: 500;
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.4), 0 0 0 1px rgba(255, 255, 255, 0.15);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  z-index: 9999;
  opacity: 0;
  pointer-events: none;
  width: min(92vw, 440px);
  transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1), opacity 0.3s ease;
}

.toast-box.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
  pointer-events: auto;
}

/* ---------- 11. Responsive Breakpoints ---------- */
@media (max-width: 992px) {
  .col-8, .col-7, .col-6, .col-5, .col-4, .col-3 {
    grid-column: span 12;
  }
  .bento-grid {
    gap: 1rem;
  }
}

@media (max-width: 768px) {
  .site-nav .nav-links {
    display: none; /* Replaced by bottom dock on mobile */
  }
  .bottom-dock {
    display: flex;
  }
  .bento-card {
    padding: 1.25rem;
  }
  .timeline-section {
    padding-left: 1.5rem;
  }
  .timeline-node::before {
    left: -1.5rem;
  }
}